moving apptron vm definition here with gh actions builder

.github/workflows/build-image.yml

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+name: Build Image
+
+on:
+  push:
+    branches: 
+      - main
+
+defaults:
+  run:
+    # GitHub Actions run without a TTY device. This is a workaround to get one,
+    # based on https://github.com/actions/runner/issues/241#issuecomment-2019042651
+    shell: 'script --return --quiet --log-out /dev/null --command "sh -e {0}"'
+
+jobs:
+  build-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    services:
+      docker:
+        image: docker:dind
+        options: --privileged --shm-size=2g
+        volumes:
+          - /var/run/docker.sock:/var/run/docker.sock:ro
+    container:
+      image: progrium/env86:latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Create image
+        run: |
+          make vm
+          tar -czf apptron-vm.tgz -C dist .
+
+      - uses: ncipollo/release-action@v1
+        with:
+          tag: "release"
+          allowUpdates: true
+          artifacts: "apptron-vm.tgz"

.gitignore

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+/vm/image
+/dist

Makefile

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+.PHONY: vm
+
+vm: 
+	rm -rf ./vm/image
+	env86 create --with-guest --from-docker ./vm/Dockerfile ./vm/image
+	env86 boot --cold --ttyS0 --save --no-console --exit-on="localhost:~#" ./vm/image
+	rm -rf ./dist 
+	env86 prepare ./vm/image ./dist

vm/Dockerfile

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+FROM i386/alpine:3.18.6
+
+ENV KERNEL=lts
+ENV HOSTNAME=localhost
+ENV PASSWORD='root'
+
+RUN apk add openrc \ 
+            alpine-base \
+            agetty \
+            alpine-conf
+
+# Install mkinitfs from edge (todo: remove this when 3.19+ has worked properly with 9pfs)
+RUN apk add mkinitfs --no-cache --allow-untrusted --repository https://dl-cdn.alpinelinux.org/alpine/edge/main/ 
+
+RUN if [ "$KERNEL" == "lts" ]; then \
+    apk add linux-lts \
+            linux-firmware-none \
+            linux-firmware-sb16; \
+else \
+    apk add linux-$KERNEL; \
+fi
+
+# Adding networking.sh script (works only on lts kernel yet)
+RUN if [ "$KERNEL" == "lts" ]; then \ 
+    echo -e "echo '127.0.0.1 localhost' >> /etc/hosts && rmmod ne2k-pci && modprobe ne2k-pci\nhwclock -s\nsetup-interfaces -a -r" > /root/networking.sh && \ 
+    chmod +x /root/networking.sh; \ 
+fi
+
+RUN sed -i 's/getty 38400 tty1/agetty --autologin root tty1 linux/' /etc/inittab
+RUN echo 'ttyS0::once:/sbin/agetty --autologin root -s ttyS0 115200 vt100' >> /etc/inittab 
+RUN echo "root:$PASSWORD" | chpasswd
+
+# assume env86 will add /bin/guest86
+COPY ./guest86.service /etc/init.d/guest86
+# there is a bug where it always crashes on first run
+RUN echo "rc-service guest86 start && rc-service guest86 stop && rc-service guest86 start" > /root/.profile
+
+# https://wiki.alpinelinux.org/wiki/Alpine_Linux_in_a_chroot#Preparing_init_services
+RUN for i in devfs dmesg mdev hwdrivers; do rc-update add $i sysinit; done
+RUN for i in hwclock modules sysctl hostname bootmisc; do rc-update add $i boot; done
+RUN rc-update add killprocs shutdown
+
+# Generate initramfs with 9p modules
+RUN mkinitfs -F "ata base ide scsi virtio ext4 9p" $(cat /usr/share/kernel/$KERNEL/kernel.release)

vm/guest86.service

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+#!/sbin/openrc-run
+command="/bin/guest86"
+command_background="yes"
+pidfile="/var/run/guest86.pid"